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Iniparib (BSI-201)

Catalog No.
PARP1 inhibitor,intravenously adminsitered
Grouped product items
SizePriceStock Qty
10mM (in 1mL DMSO)
In stock
In stock
In stock
In stock

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Iniparib, previously named BSI-201, is an intravenously administered PARP1 inhibitor, which either alone or in combination with chemotherapy, has important antitumor activity in studies in vitro and in vivo. It is active against a broad range of cancer cells in culture, including drug resistant cell lines. Iniparib has been reported to be a prodrug whose C-nitroso metabolite, 4-iodo-3-nitrosobenzamide, selectively kills tumor cells by oxidizing the zinc finger of PARP-1 resulting in ejection of zinc and inhibition of PARP activity.


Liang H, Tan AR. Iniparib, a PARP1 inhibitor for the potential treatment of cancer, including triple-negative breast cancer. IDrugs. 2010 Sep;13(9):646-56.

Xuesong Liu, Yan Shi, David X. Maag, Joann P. Palma, Melanie J. Patterson, Paul A. Ellis, Bruce W. Surber, Damien B. Ready, Niru B. Soni, Uri S. Ladror, Allison J. Xu, Ramesh Iyer, John E. Harlan, Larry R. Solomon, Cherrie K. Donawho, Thomas D. Penning, Eric F. Johnson,  Alexander R. Shoemaker. Iniparib Nonselectively Modifies Cysteine-Containing Proteins in Tumor Cells and Is Not a Bona Fide PARP Inhibitor. Clinical Cancer Research. January 15, 2012 18; 510.

S. Kopetz, M. M. Mita, I. Mok, K. K. Sankhala, J. Moseley, B. M. Sherman, C. R. Bradley and A. W. Tolcher. First in human phase I study of BSI-201, a small molecule inhibitor of poly ADP-ribose polymerase (PARP) in subjects with advanced solid tumors. Journal of Clinical Oncology. (Meeting Abstracts) May 2008 vol. 26 no. 15_suppl 3577

Chemical Properties

StorageStore at -20°C
Cas No.160003-66-7
SynonymsBSI201,BSI 201
Solubility≥103.4 mg/mL in DMSO, ≥24.3 mg/mL in EtOH with ultrasonic and warming,insoluble in H2O
Chemical Name4-iodo-3-nitrobenzamide
SDFDownload SDF
Canonical SMILESC1=CC(=C(C=C1C(=O)N)[N+](=O)[O-])I
Shipping ConditionEvaluation sample solution : ship with blue ice.All other available size: ship with RT , or blue ice upon request
General tipsFor obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.

Biological Activity

Description Iniparib (BSI-201) is an intravenously administered inhibitor of PARP1
Targets PARP1          

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